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Cause and effect, or fishbone, diagrams can be used to brainstorm possible causes for a problem.

Control charts can be used to determine whether or not a process is stable and in control or unpredictable and out of control due to special causes.

Stratification is a data organization technique that can be used in conjunction with the other quality tools. It involves separating data into meaningful groups to see the effects of the grouping variables.

Course Details

Specs

Training Time: 18
minutes

Compatibility:
Desktop, Tablet, Phone

Based on:
Industry Standards and Best Practices

Languages:
English

The seven basic quality control tools are a set of commonly used graphical statistical analysis tools. They can be used to help solve many different types of problems, not just quality problems. The seven tools are: cause and effect diagrams, check sheets, control charts, histograms, Pareto charts, scatter plots, and data stratification. It is important to understand the purpose of each of these tools and how to interpret the information. This 7 QC tools training course provides a summary of each tool, including common uses.

Learning Objectives

At the end of this module, you will be able to:

List the seven basic quality tools

Describe each of the tools and how they can be utilized

Key Questions

The following key questions are answered in this module:

What is a check sheet used for?
Check sheets are simple data collection tools. They have many purposes, including collecting data on the frequency or location of problems.

What is a histogram?
A histogram is a special bar graph that is used to show how often a value, or range of values, occurs in a given time period. Using a histogram, you can tell if data is normally distributed, the process is capable of meeting customer requirements, changes have occurred in the process, or how two processes compare.

What is a Pareto chart?
A Pareto chart is another special kind of bar chart that shows the relative frequency or magnitude of a problem or cause. The bars are arranged in order from longest to shortest to identify the most frequent problem.

What is a scatter plot?
A scatter plot is a graph of paired numerical data that is used to understand the relationship between two variables.

What are the 6 Ms?
For production processes, most possible causes will fall into one of six categories: Machines, Methods, Materials, Measurements, Mother Nature, and Manpower. These six categories can be used to help identify possible causes on a fishbone diagram.

Sample Video Transcript

Below is a transcript of the video sample provided for this module:

The seven basic quality tools are a set of commonly used graphical statistical analysis tools. They can be used to help solve many different types of problems, not just quality problems.
The seven tools are:
• Cause and effect, or fishbone, diagrams
• Check sheets
• Control charts
• Histograms
• Pareto charts
• Scatter plots
• Data stratification (classification)
Most of the time you will end up using a combination of these tools. Each tool will now be described in more detail.

Additional Resources

Use the additional resources and links below to learn more about this topic:

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